The White House announced its opposition to a new round of Iran sanctions that the Senate unanimously approved Friday, in the latest instance of Congress pushing for more aggressive punitive measures on Iran than the administration deems prudent.

On Thursday, Sens. Robert Menendez (D-NJ) and Mark Kirk (R-IL) introduced the amendmentto the National Defense Authorization Act, which the Senate passed 94-0. The new legislative language would blacklist Iran’s energy, port, shipping, and shipbuilding sectors, while also placing new restrictions on Iran’s ability to get insurance for all these industries. The legislation would also vastly expand U.S. support for human rights inside Iran and impose new sanctions on Iranians who divert humanitarian assistance from its intended purpose.

“The window is closing. The time for the waiting game is over,” Menendez said on the Senate floor Thursday night. “Yes, our sanctions are having a demonstrable effect on the Iranian economy, but Iran is still working just as hard to develop nuclear weapons.”

But the White House told several Senate offices Thursday evening that the administration was opposed to the amendment. National Security Spokesman Tommy Vietor sent The Cable the administration’s official position, explaining the White House’s view the sanctions aren’t needed and aren’t helpful at this time.